Oil to gas retrofit/ tune to max efficiency

griffinbr

Top of the morning everyone been following Dan Holohan and I am a fan! Love hydronic’s !!..I am planning on adding a boiler buddy or buffer tank not sure if anyone has any other ideas that would be more cost effective…? but wanted to get any direction on how I can have this 300 PB purefire running most efficiently, should I change the piping to go directly off of the boiler to the indirect, like in the IBR photo?
. The delta T with just the Indirect is 30, with firing rate turned down down. Using a three speed GF circulator. Not sure if I should pipe indirect Like the photo IBR references? Any feedback would be greatly appreciated. 

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HVACNUT

Why are you not using Peerless specs?

STEVEusaPA

Dude. I'm trying to eat.

griffinbr

griffinbr

So the manual specs have the pressure relief valve mounted on the return side for pf300 and 399*?(
Little confusing) however, these differ from the other one *this PB pf300 is a rev2 does anyone know if that means safety relief valve should be mounted on the return side? 

pecmsg

I see the TPR on the supply side!!

hot_rod

If the goal is to lower fuel cost, start with the efficiency if the structure.
Next operate the boiler at the lowest, safest temperature.
Short cycling kills efficiency, ODR can help with that

griffinbr

RE-piped to Peerless specifications running like a Champ 💪🏼!! Appreciate the support and feedback fellas.. excuse the wiring just had to get hot water back on.. flushed with sentinel 400 and about to drain system to do X 100 treatment. This baby just chugs along and the condensate it spits out is unbelievable improvement from what It was doing before.

griffinbr

Having some trouble with the returns off the manifold, the Bell and Gossets circulator flanges they are check, trolls so having pump on the return I can’t get a solid flow. Any suggestions; I was thinking swap out for regular circulation flange’s and possibly run into ghost flow? Or mount circulators on supply side and pump away? Any help would be appreciated 

hot_rod

The check flanges need to be on the discharge side of the circ, not the inlet. Is that how you have them?

griffinbr

Yes Hot Rod the flanges are on the discharge side. I tried it this morning first thing and it started purging perfectly. Not sure what had happened.

Zman

I think your check valves are likely airlocked. It's a good idea to have purge ports on both sides of a loop with check valves.

A few tips on your installation:

• Wet-rotor circulators should be installed with the shaft oriented horizontally.
  
• Less is more when it comes to solder and flux, Once the entire fitting has taken solder, try filling gaps as the pipe cools. You will end up with less solder inside the pipe and a cleaner look.
  
• Allthread pipe supports are better used vertically or in very short lengths. Unistrut might help in your installation.
  
• MC wiring would give you a more durable and professional installation over Romex.
  

griffinbr

Appreciate the feedback! Any suggestions for relay boards? Had a bad 306p Teckmar out of the box, would not pull 10 volts with my meter on + and -. Tech support said that it happens sometimes.